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Dynamic Earth Unit Flashcards | StudBud
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Dynamic Earth Unit
Dynamic Earth Unit
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Earth Science Edgenuity Course
Flashcards
22 cards
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Practice quiz
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Questions
22
Answers
1
Which temperature most likely corresponds to the asthenosphere?
1,613 C
2,521 C
6,217 C
3,628 C
2
Which event is associated with convergent boundaries?
Formation of Island chains
Creation of mid-ocean ridges
Creating of convection currents
3
The layers of the Earth. Which statement is correct?
The outer core is less than 70 km in thickness
The mantle is denser than the crust
Pressure increases when moving from the core to the crust.
The crust assists in forming Earth's Magnetic field
4
Which type of evidence do geologist usually study?
Diversity of life found on Earth
location of Earth in Outer Space
Waves the move through Earth
Interactions between living things on Earth
5
Which statement best describes the theory of plate tectonics?
Sections of Earth's continents are in slow, constant movement.
Plates sometimes move closer to one another.
Sections of Earth that shift are part of Earth's asthenosphere
6
What causes the forces that pushes magma from the magma chamber through the pipe and vent of a volcano?
Convergent boundaries
Gravity
Water flow
Expanding gases
7
Hawaiian eruption of lava flowing into the sea. Which best describes this eruption?
Its magma has low viscosity
Its magma is high in silica
Its gases are released in rapid bursts.
Its lava came from an explosive eruption.
8
Explain Wegener's fossil evidence about land animals found on continents across oceans from one another.
Animals evolved separately on each continent.
Continents were once one landmass and have drifted apart
Animals swam across the ocean
9
Which increases along faults and leads to rock breaking?
Damage
Stress
Focus
Earthquake
10
Which plate forms a boundary with the African plate?
Pacific
Philippine
South American
Nazca
11
Mount St. Helens Volcano erupted with great force. Which phrase best describes this eruption?
Magma low in Silica
High-Viscosity magma
Gentle lava flows
Quiet eruption
12
Which statement describes the damage that results from Earthquakes?
The amount of damage increases as magnitude decreases.
Amount of damage can be used to determine intensity.
Damage can be measured using the Richter scale.
13
Which feature forms when magma cools beneath Earth's surface?
Calderas
Vents
Batholiths
Geysers
14
Look at the Volcano Locations map. Pick the best answer.
No volcanoes are found in the middle of the ocean
Many volcanoes are on the eastern coast of Asia
15
Great Rift Valley in Africa (rift valley), how did it form?
The rift valley formed at a convergent boundary
The rift valley formed when the crust pulled apart
The rift valley formed similarly to an island arc
16
Wegener's ideas that contributed to the theory of continental drift...
The continents have moved apart very quickly due to earthquakes.
The continents were once connected as one landmass.
The continents drifted apart due to repeated meteor impacts.
17
How do geologists study direct evidence of Earth’s interior?
by measuring seismic wave activity
by analyzing how living things survice
by recording changes in climate patterns
By collecting core rock samples
18
One step geologists use to find the epicenter of an earthquake?
They look at data from at least one seismograph.
The draw circles around the epicenter from three locations.
They measure the difference between arrival of P and S waves
19
Which statement describes seismic waves?
They only vibrate at Earth's surface.
They originate from the epicenter.
They carry energy
20
Theory of Continental Drift. Which is evidence of Climate Change?
Glacial evidence found in South America
Coal fields in several continents
Volcano formation
Folded mountains in Africa and South American
21
When were Earth's landmasses first recognizable as the continents we know today?
135 million yrs ago
10 million yrs ago
180 million yrs ago
22
In which layer of the Earth does the motion of the convection currents drive plate movement?
Lithosphere
Mantle
Outer Core
Inner Core
